These are not actually good strategies, they're virtue signals that founders use to tell investors that we've got the "Silicon Valley" ethos that bought you Facebook/Google/etc.
So people are always going to look for possibilities that are superficially and obviously terrible approaches, but which look like they might be the secret of success if you squint the right way.
It's not merely that these particular slogans are bad and should be eliminated, it's that the nature of the game leads people to look for and invent such things, and if we all agreed not to ever say these things again, new ones would arise. I don't think there is a general solution.
But he did try a lot of different filament materials. It would've been really dumb to think he was going to somehow get cotton or whatever wrong material correct if he just stuck with it. Instead he had procedures and a framework to try a lot of candidates and iterate quickly.
I get this argument might not be exactly fair because I can twist it to nearly anything. But that's how maxims like "fail fast" or "haste makes waste" or "a stitch in time..." works. They still have value
People still laud Uber for illegal behaviour.